Re: Multiple functions: was the gc

[William Ahern <wahern@...>]

<snip>On Tue, 2006-08-22 at 08:48 +0100, David Jones wrote:

> If the function you want to execute _is_ the entire script loaded by  
> lua_load then you can't do what you want.  You must use lua_load to  
> get a fresh instance of the function (this is a small drawback in Lua  
> I think).
> 
> However, I think wrapping your scripts should work:
> return function(...)
> -- original script goes here
> end
> 
> Then, you can lua_load the script once and lua_call it each time you  
> want a fresh function instance.  That'll be dead fast.

That didn't work for me. The closure inherited the environment of the
outer function. You could do:

	local fn = function() bar() end
	setfenv(fn, foo)
	return fn

But that only works for a single level. Any functions _called_ by that
closure are still bound to the original environment. In this case,
calling "bar" puts you right back where you started.

-- 
William Ahern <wahern@barracudanetworks.com>


--------------------------------------------------
This message was scanned for Spam, Spyware and Viruses
For more information, please visit:
http://www.barracudanetworks.com